-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathstring_misc.html
More file actions
377 lines (329 loc) · 18.1 KB
/
Copy pathstring_misc.html
File metadata and controls
377 lines (329 loc) · 18.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
<!-- Generated by pkgdown: do not edit by hand -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Miscellaneous string functions — string_dup • stringops</title>
<!-- jquery -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
<!-- Bootstrap -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script>
<!-- bootstrap-toc -->
<link rel="stylesheet" href="../bootstrap-toc.css">
<script src="../bootstrap-toc.js"></script>
<!-- Font Awesome icons -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous" />
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous" />
<!-- clipboard.js -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script>
<!-- headroom.js -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script>
<!-- pkgdown -->
<link href="../pkgdown.css" rel="stylesheet">
<script src="../pkgdown.js"></script>
<meta property="og:title" content="Miscellaneous string functions — string_dup" />
<meta property="og:description" content="Miscellaneous string functions that don't quite fit into the other categories." />
<!-- mathjax -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script>
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body data-spy="scroll" data-target="#toc">
<div class="container template-reference-topic">
<header>
<div class="navbar navbar-default navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<span class="navbar-brand">
<a class="navbar-link" href="../index.html">stringops</a>
<span class="version label label-default" data-toggle="tooltip" data-placement="bottom" title="Released version">0.0.0.1</span>
</span>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li>
<a href="../index.html">
<span class="fas fa-home fa-lg"></span>
</a>
</li>
<li>
<a href="../reference/index.html">Reference</a>
</li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li>
<a href="https://github.com/robertschnitman/stringops/">
<span class="fab fa-github fa-lg"></span>
</a>
</li>
</ul>
</div><!--/.nav-collapse -->
</div><!--/.container -->
</div><!--/.navbar -->
</header>
<div class="row">
<div class="col-md-9 contents">
<div class="page-header">
<h1>Miscellaneous string functions</h1>
<small class="dont-index">Source: <a href='https://github.com/robertschnitman/stringops/blob/master/R/string_misc.R'><code>R/string_misc.R</code></a></small>
<div class="hidden name"><code>string_misc.Rd</code></div>
</div>
<div class="ref-description">
<p>Miscellaneous string functions that don't quite fit into the other categories.</p>
</div>
<pre class="usage"><span class='fu'>string_dup</span><span class='op'>(</span><span class='va'>s</span>, <span class='va'>times</span><span class='op'>)</span>
<span class='fu'>string_insert</span><span class='op'>(</span><span class='va'>s</span>, <span class='va'>insert</span>, <span class='va'>position</span><span class='op'>)</span>
<span class='fu'>string_split</span><span class='op'>(</span><span class='va'>s</span>, <span class='va'>split</span>, <span class='va'>...</span><span class='op'>)</span>
<span class='fu'>string_len</span><span class='op'>(</span><span class='va'>s</span><span class='op'>)</span>
<span class='fu'>string_reverse</span><span class='op'>(</span><span class='va'>s</span><span class='op'>)</span>
<span class='fu'>string_unique</span><span class='op'>(</span><span class='va'>s</span><span class='op'>)</span>
<span class='fu'>string_sort</span><span class='op'>(</span><span class='va'>s</span>, descend <span class='op'>=</span> <span class='cn'>FALSE</span><span class='op'>)</span></pre>
<h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
<table class="ref-arguments">
<colgroup><col class="name" /><col class="desc" /></colgroup>
<tr>
<th>s</th>
<td><p>A string (character) vector.</p></td>
</tr>
<tr>
<th>times</th>
<td><p>The number of times to duplicate a string.</p></td>
</tr>
<tr>
<th>insert</th>
<td><p>The string to insert.</p></td>
</tr>
<tr>
<th>position</th>
<td><p>The position index to which to insert the string.</p></td>
</tr>
<tr>
<th>split</th>
<td><p>The character by which to split a string vector.</p></td>
</tr>
<tr>
<th>...</th>
<td><p>Parameters passed to <code><a href='https://rdrr.io/r/base/strsplit.html'>strsplit()</a></code>.</p></td>
</tr>
<tr>
<th>descend</th>
<td><p>Whether to sort in descending order (<code>TRUE</code>) or not (<code>FALSE</code>; the default).</p></td>
</tr>
</table>
<h2 class="hasAnchor" id="details"><a class="anchor" href="#details"></a>Details</h2>
<p><code>string_dup()</code> acts the same as <code><a href='https://rdrr.io/r/base/strrep.html'>strrep()</a></code>: it repeats a string n number of times.</p>
<p><code>string_insert()</code> inserts a string at a specified position.</p>
<p><code>string_len()</code> acts the same as <code><a href='https://rdrr.io/r/base/nchar.html'>nchar()</a></code>: it counts the number of characters per vector element.</p>
<p><code>string_reverse()</code> reverses the characters in a string.</p>
<p><code>string_split()</code> acts the same as <code><a href='https://rdrr.io/r/base/strsplit.html'>strsplit()</a></code>: it splits a string by a specified character.</p>
<p><code>string_unique()</code> obtains the distinct characters for each element in a vector.</p>
<p><code>string_sort()</code> arranges the letters in the character vector in order if <code>descend = FALSE</code> (the default) and reverse order if <code>descend = TRUE</code>.</p>
<p>The synonym pattern of these functions are <code>s_*()</code> and <code>*()</code> (insert, len, and reverse). For the former pattern, you can replace with split, unique, and sort, as well.</p>
<h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>
<div class='dont-index'><p><a href='https://github.com/robertschnitman/stringops'>https://github.com/robertschnitman/stringops</a></p></div>
<h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
<pre class="examples"><div class='input'><span class='fu'>string_dup</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/colnames.html'>rownames</a></span><span class='op'>(</span><span class='va'>mtcars</span><span class='op'>)</span>, <span class='fl'>3</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "Mazda RX4Mazda RX4Mazda RX4"
#> [2] "Mazda RX4 WagMazda RX4 WagMazda RX4 Wag"
#> [3] "Datsun 710Datsun 710Datsun 710"
#> [4] "Hornet 4 DriveHornet 4 DriveHornet 4 Drive"
#> [5] "Hornet SportaboutHornet SportaboutHornet Sportabout"
#> [6] "ValiantValiantValiant"
#> [7] "Duster 360Duster 360Duster 360"
#> [8] "Merc 240DMerc 240DMerc 240D"
#> [9] "Merc 230Merc 230Merc 230"
#> [10] "Merc 280Merc 280Merc 280"
#> [11] "Merc 280CMerc 280CMerc 280C"
#> [12] "Merc 450SEMerc 450SEMerc 450SE"
#> [13] "Merc 450SLMerc 450SLMerc 450SL"
#> [14] "Merc 450SLCMerc 450SLCMerc 450SLC"
#> [15] "Cadillac FleetwoodCadillac FleetwoodCadillac Fleetwood"
#> [16] "Lincoln ContinentalLincoln ContinentalLincoln Continental"
#> [17] "Chrysler ImperialChrysler ImperialChrysler Imperial"
#> [18] "Fiat 128Fiat 128Fiat 128"
#> [19] "Honda CivicHonda CivicHonda Civic"
#> [20] "Toyota CorollaToyota CorollaToyota Corolla"
#> [21] "Toyota CoronaToyota CoronaToyota Corona"
#> [22] "Dodge ChallengerDodge ChallengerDodge Challenger"
#> [23] "AMC JavelinAMC JavelinAMC Javelin"
#> [24] "Camaro Z28Camaro Z28Camaro Z28"
#> [25] "Pontiac FirebirdPontiac FirebirdPontiac Firebird"
#> [26] "Fiat X1-9Fiat X1-9Fiat X1-9"
#> [27] "Porsche 914-2Porsche 914-2Porsche 914-2"
#> [28] "Lotus EuropaLotus EuropaLotus Europa"
#> [29] "Ford Pantera LFord Pantera LFord Pantera L"
#> [30] "Ferrari DinoFerrari DinoFerrari Dino"
#> [31] "Maserati BoraMaserati BoraMaserati Bora"
#> [32] "Volvo 142EVolvo 142EVolvo 142E" </div><div class='input'><span class='fu'>string_insert</span><span class='op'>(</span><span class='st'>"abcd"</span>, <span class='st'>"Z"</span>, <span class='fl'>3</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "abZcd"</div><div class='input'><span class='fu'>string_len</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/colnames.html'>rownames</a></span><span class='op'>(</span><span class='va'>mtcars</span><span class='op'>)</span><span class='op'>)</span>
</div><div class='output co'>#> [1] 9 13 10 14 17 7 10 9 8 8 9 10 10 11 18 19 17 8 11 14 13 16 11 10 16
#> [26] 9 13 12 14 12 13 10</div><div class='input'><span class='fu'>string_reverse</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/colnames.html'>rownames</a></span><span class='op'>(</span><span class='va'>mtcars</span><span class='op'>)</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "4XR adzaM" "gaW 4XR adzaM" "017 nustaD"
#> [4] "evirD 4 tenroH" "tuobatropS tenroH" "tnailaV"
#> [7] "063 retsuD" "D042 creM" "032 creM"
#> [10] "082 creM" "C082 creM" "ES054 creM"
#> [13] "LS054 creM" "CLS054 creM" "doowteelF callidaC"
#> [16] "latnenitnoC nlocniL" "lairepmI relsyrhC" "821 taiF"
#> [19] "civiC adnoH" "alloroC atoyoT" "anoroC atoyoT"
#> [22] "regnellahC egdoD" "nilevaJ CMA" "82Z oramaC"
#> [25] "driberiF caitnoP" "9-1X taiF" "2-419 ehcsroP"
#> [28] "aporuE sutoL" "L aretnaP droF" "oniD irarreF"
#> [31] "aroB itaresaM" "E241 ovloV" </div><div class='input'><span class='fu'>string_split</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/colnames.html'>rownames</a></span><span class='op'>(</span><span class='va'>mtcars</span><span class='op'>)</span>, <span class='st'>" "</span><span class='op'>)</span>
</div><div class='output co'>#> [[1]]
#> [1] "Mazda" "RX4"
#>
#> [[2]]
#> [1] "Mazda" "RX4" "Wag"
#>
#> [[3]]
#> [1] "Datsun" "710"
#>
#> [[4]]
#> [1] "Hornet" "4" "Drive"
#>
#> [[5]]
#> [1] "Hornet" "Sportabout"
#>
#> [[6]]
#> [1] "Valiant"
#>
#> [[7]]
#> [1] "Duster" "360"
#>
#> [[8]]
#> [1] "Merc" "240D"
#>
#> [[9]]
#> [1] "Merc" "230"
#>
#> [[10]]
#> [1] "Merc" "280"
#>
#> [[11]]
#> [1] "Merc" "280C"
#>
#> [[12]]
#> [1] "Merc" "450SE"
#>
#> [[13]]
#> [1] "Merc" "450SL"
#>
#> [[14]]
#> [1] "Merc" "450SLC"
#>
#> [[15]]
#> [1] "Cadillac" "Fleetwood"
#>
#> [[16]]
#> [1] "Lincoln" "Continental"
#>
#> [[17]]
#> [1] "Chrysler" "Imperial"
#>
#> [[18]]
#> [1] "Fiat" "128"
#>
#> [[19]]
#> [1] "Honda" "Civic"
#>
#> [[20]]
#> [1] "Toyota" "Corolla"
#>
#> [[21]]
#> [1] "Toyota" "Corona"
#>
#> [[22]]
#> [1] "Dodge" "Challenger"
#>
#> [[23]]
#> [1] "AMC" "Javelin"
#>
#> [[24]]
#> [1] "Camaro" "Z28"
#>
#> [[25]]
#> [1] "Pontiac" "Firebird"
#>
#> [[26]]
#> [1] "Fiat" "X1-9"
#>
#> [[27]]
#> [1] "Porsche" "914-2"
#>
#> [[28]]
#> [1] "Lotus" "Europa"
#>
#> [[29]]
#> [1] "Ford" "Pantera" "L"
#>
#> [[30]]
#> [1] "Ferrari" "Dino"
#>
#> [[31]]
#> [1] "Maserati" "Bora"
#>
#> [[32]]
#> [1] "Volvo" "142E"
#> </div><div class='input'><span class='fu'>string_unique</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/colnames.html'>rownames</a></span><span class='op'>(</span><span class='va'>mtcars</span><span class='op'>)</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "Mazd RX4" "Mazd RX4Wg" "Datsun 710" "Hornet 4Div"
#> [5] "Hornet Spabu" "Valint" "Duster 360" "Merc 240D"
#> [9] "Merc 230" "Merc 280" "Merc 280C" "Merc 450SE"
#> [13] "Merc 450SL" "Merc 450SLC" "Cadilc Fetwo" "Lincol Ctea"
#> [17] "Chrysle Impia" "Fiat 128" "Honda Civc" "Toyta Crl"
#> [21] "Toyta Crn" "Dodge Chalnr" "AMC Javelin" "Camro Z28"
#> [25] "Pontiac Frebd" "Fiat X1-9" "Porsche 914-2" "Lotus Erpa"
#> [29] "Ford PanteL" "Ferai Dno" "Maserti Bo" "Volv 142E" </div><div class='input'><span class='fu'>string_sort</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/colnames.html'>rownames</a></span><span class='op'>(</span><span class='va'>mtcars</span><span class='op'>)</span><span class='op'>)</span>
</div><div class='output co'>#> [1] " 4aadMRXz" " 4aaadgMRWXz" " 017aDnstu"
#> [4] " 4DeeHinorrtv" " abeHnoooprrStttu" "aailntV"
#> [7] " 036Derstu" " 024cDeMr" " 023ceMr"
#> [10] " 028ceMr" " 028cCeMr" " 045ceEMrS"
#> [13] " 045ceLMrS" " 045cCeLMrS" " aacCddeeFilllootw"
#> [16] " acCeiillLnnnnnoott" " aCeehiIllmprrrsy" " 128aFit"
#> [19] " acCdHiinov" " aaClloooortTy" " aaCnoooortTy"
#> [22] " aCdDeeegghllnor" " aACeiJlMnv" " 28aaCmorZ"
#> [25] " abcdeFiiinoPrrt" "- 19aFitX" "- 1249cehoPrs"
#> [28] " aELooprstuu" " aadeFLnoPrrt" " aDeFiinorrr"
#> [31] " aaaBeiMorrst" " 124EloovV" </div><div class='input'><span class='fu'>string_sort</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/colnames.html'>rownames</a></span><span class='op'>(</span><span class='va'>mtcars</span><span class='op'>)</span>, descend <span class='op'>=</span> <span class='cn'>TRUE</span><span class='op'>)</span>
</div><div class='output co'>#> [1] "zXRMdaa4 " "zXWRMgdaaa4 " "utsnDa710 "
#> [4] "vtrroniHeeD4 " "utttSrrpooonHeba " "Vtnliaa"
#> [7] "utsreD630 " "rMeDc420 " "rMec320 "
#> [10] "rMec820 " "rMeCc820 " "SrMEec540 "
#> [13] "SrMLec540 " "SrMLeCc540 " "wtoollliFeeddCcaa "
#> [16] "ttoonnnnnLlliieCca " "ysrrrpmllIiheeCa " "tiFa821 "
#> [19] "voniiHdCca " "yTtroooollCaa " "yTtroooonCaa "
#> [22] "ronllhggeeeDdCa " "vnMlJieCAa " "ZromCaa82 "
#> [25] "trrPoniiiFedcba " "XtiFa91 -" "srPohec9421 -"
#> [28] "uutsrpooLEa " "trrPonLFedaa " "rrroniiFeDa "
#> [31] "tsrroMieBaaa " "VvoolE421 " </div><div class='input'>
</div></pre>
</div>
<div class="col-md-3 hidden-xs hidden-sm" id="pkgdown-sidebar">
<nav id="toc" data-toggle="toc" class="sticky-top">
<h2 data-toc-skip>Contents</h2>
</nav>
</div>
</div>
<footer>
<div class="copyright">
<p>Developed by Robert Schnitman.</p>
</div>
<div class="pkgdown">
<p>Site built with <a href="https://pkgdown.r-lib.org/">pkgdown</a> 1.6.1.</p>
</div>
</footer>
</div>
</body>
</html>